Starting and stopping mechanism.



H. W. WINTER.

STARTING AND STOPPING MECHANISM.

APPLICATION FILED JULY 25, I910.

Patented July 20, 1915.

' 3 SHEETSSHEETI I I/T/VESSES COLUMBIA PLANOGRAPH (IO-,WASHINGTON, D. c.

H. W. WINTER.

STARTING AND STOPPING MECHANISM.

APPLICATION HLED JULY 25. 1910.

1,147,202. Patented July 20, 1915.

3 SHEETS-SHEET 2.

Wl/[A/TU/ I 7 Mm: 532

COLUMBIA PLANOURAPH 60-, WASHINGTON, D. C.

H. W. WINTER. STARTING AND STOPPING MECHANISM.

APPLICATION FILED JULY 25. I910.

Patented July 20, 1915.

3 SHEETS-SHEET 3.

I/V/Z'A/ESSESZ [WK-$4M pi v HENRY W. WINTER, 0F IVIETHUEN,MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, OF PATERSON,

JERSEY.

- Specification of Letters Patent.

-NEW JERSEY, A CORPORATION OF NEW PatentedJuly 2c, 1915 Applicationfiled July 25, 1910. Serial No. 573,669.

To all whom it may concern:

Be it known that I, HENRY W. WINTER, a citizen of the United States,residing at Methuen, in the county of Essex and State of Massachusetts,have invented certain Improvements in Starting and StoppingMech anisms,of which the following description, in connection with the accompanyingdrawings, is a specification, like reference characters on the drawingsindicating like parts in the several figures.

This invention relates to a starting and stopping mechanism for highspeed machines, and is herein shown applled to a rotary sole. edgetrimming machine. In operating machines of this character the workmanhas frequent occasion to stop the machine to grind or change thecutters, and the fact that the machine runs at a high speed occasionsconsiderable loss of time if he must wait for it to stop of its ownaccord. Furthermore, if the operator indulges in the practiceof stoppingthe machine by holding something against the cutter shaft, he sooninjures the bearings to such an (no tent that their adjustmentisdisturbed and the smooth running qualities of the machine necessary togoodwork are impaired.

It is the object of this invention to provide a starting and stoppingmechanism that shall be positive and reliable in operation, simple inconstruction and capable of ready adaptation to a variety of operatingconditions. h

The specific embodiment of the invention herein shown is designedespecially for use on an edge trimming machine, but it will be obviousto those skilled in the art that the invention is not limited in itsapplication to machines of this type.

The invention will be clearly understood from the following descriptionof apreferred form, reference being -made to the accompanying drawings,in which,'

Figure l is a side elevation of an edge trimming machine with thecombined belt shifter and brake applied thereto; Fig. 2 is an endelevation of the machine; and Fig. 3 is a perspective view showinganother arrangement of the belt shifter.

Referring more particularly to Figs. 1 and 2 of the drawings, 2designates the frame of the machine which carries at its head two cuttershafts 4: and 6 and supports in its base a main driving shaft 8.

positions.

The cutter shafts are each belted to the shaft 8 to be driven thereby.Fast and loose pulleys 10 and 12 respectively are mounted on the drivingshaft 8 to afford means for belting the machine to any' convenientsource of power. Bolted to thebase of the frame near the driving shaftis a "pivoted on a bracket secured to the machine frame near the innerend of the slide 16 and has a slot formed in one of its arms to receivea pin 22 that extends through the bifurcated end of the slide. The otherarm of the bell-crank lever is pivotally connected to one end of a rod24 that is pivoted at its opposite end to a hand operating lever 26fulcrumed on the machine frame at 28. It will be obvious that as thehand lever 26 is moved up or down its motion will be transmitted,through the rod 24: and bellcrank lever, to the belt shifting device totransfer the belt from one pulley to the other. i y p The brakemechanism comprises a brake wheel 30 fast on the shaft 8 and a brakelever 82 fulcrumed on the frame and carrying a brake shoe. that overliesthe brake wheel 30 in position to be moved into or out of contacttherewith. A rod 34 operatively connects the lever 32 with the handlever 26. It should be noted that the point of connection of the brakerod 34 to the lever 26 lies between the fulcrum 28 and the 24 with theoperating lever. By this "arrangement the movement imparted to' the beltshifter by the operating lever is'much greater than that given to thebrake lever.

The hand lever 26 is movable in a vertical slot 36 cut in themachineframe and two notches 35 and 37 are formed in the wall of theslot, one; at each end thereof to receive and, hold the lever in either.of its extreme A spring- 88, connected at one end to the lever and atits opposite end to the frame, serves to hold thelever in either of thenotches in which it may be positioned.

Assuming the parts to be in the position shown in the drawings with thebelt on the loose pulley and the brake applied, it is merely necessary,in order to start the machine, to throw the lever 26 from the lowernotch 37 into the upper one 35. It will be clear that a very slightupward movement of the lever will release the brake before the beltshifter has been moved far enough to do more than start the belt towardthe fast pulley. Further movement of the lever, however, will shift thebelt onto the fast pulley and start the machine. To stop the machine thelever is again moved downwardly into the lower notch. As soon as thelever is started on its downward movement, the slide 16 will be movedtoward the right to throw the belt on to the loose pulley, but the brakewill not be applied until the belt has been freed entirely from the fastpulley and the lever hasbeen forced down nearly to the lower limit ofits movement. Since the connections from the operating lever to the beltshifter and brake are positive, the movements of the parts are positiveand the cycle of operations is certain. The rods 24: and 34 are eachthreaded at their. ends so that they may be adjusted in theirconnections and by means of such adjustment the timing of the movementsof the brake'and shifter may be varied.

When the driving belt runs on to the pulleys 10 and 1 2 from a pointabove the machine, the belt shifting mechanism will be arranged in themanner above described. In some cases, however, it is preferable to havethe belt run up through the floor; and one feature of this invention,therefore, consists in providing a construction whereby the beltshifting mechanism may be arranged readily to meet these requirements.

Referring to Fig. 3, it will be noted that the casting 14 is thereshown, secured to the frame above and to the left of the shaft 8. Thebolts by which the casting is secured arereceived in holes indicated at40 in Fig. 2. The slide 16 is positioned in the guide way of the casting14: with the belt engaging rods 18 projecting downwardly instead ofupwardly as before. The bell crank 20 also is reversed but its pivot isstill in the same horizontal plane as before. The rod 241 is connectedto the end of the operating lever 26 at a point equidistant from thefulcrum 28 with its previous point of connection. The change in level ofthe point of connection of the rod 24 with the bell crank 20 compensatesfor the change in level of the point of connection of said rod with theoperating lever 26, so that the relation of the pivotal points of themechanism is maintained constant, and the same cycle of movement occurswhen the lever 26 is operated as before. N 0 change in the arrangementof the parts of the brake mechanism is necessary. With the belt shiftingmechanism arranged in the manner illustrated in Fig. 3, the belt may berun on the pulleys 10 and 12 from any. point below the shaft 8.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a machine having a shaft and fast and loose pulleys mountedthereon, a belt shifting device for throwing the belt from one pulley onto the other, a brake for said shaft, an operating lever and independentpositive connections between said lever and said brake and shiftingdevice, the connection to the brake being attached to the lever at apoint nearer to its fulcrum than the point of attachment of theconnection to the belt shifter.

2. In a machine having a shaft and fast and loose pulleys mountedthereon, a belt shifter for'throwing the belt from one of said pulleysto the other, a brake for said shaft, an operating lever, a rodpositively connecting said brake with said operating lever, a rod andbell crank lever. positively connecting said belt shifter with saidoperating lever and means for retaining said operating lever in eitherof its extreme positions.

3. In a machine having a rotary shaft and fast and loose pulleys mountedthereon, a bracket supported by the frame adjacent to said pulleys, saidbracket having a guidewav formed therein, a sliding belt shifterpositioned in said guideway, a bell crank lever having one of its armsconnected by a pin and slot with said belt shifter, an operating leverfulcrumed on the machine frame, a rod connecting said operating leverwith the other arm of the bell crank lever, a brake wheel mounted onsaid shaft, a brake lever pivoted on said frame and carrying a brakeshoe arranged to engage said wheel, a rod connecting said brake leverwith said operating lever, the point of connection of the brake rod tothe operating lever being nearer to the fulcrum of the lever than thepoint of connection of the shifter rod with the operating lever, saidoperating lever being movable in a notched slot formed in the machineframe, a spring operating on the lever to retain it in any one of thenotches in which it is positioned and provision for varying theeffective lengths of said rods.

4. In a machine having a shaft and fast and loose pulleys mountedthereon, a brake mechanism comprising a brake wheel on said shaft, apivoted brake lever cooperating with said wheel, an operating lever anda rod connecting said lever and brake; and a belt shifting mechanismcomprising a bracket secured to the frame of the machine, a belt shiftersupported thereby, a bell crank lever connected to said shifter and arod connecting said bell crank and operating lever,

the machine frame having provision where- In testimony whereof I havesigned my by the bracket may be secured thereto in difname to thisspecification in the presence of 10 ferent positions and the parts ofsaid belt two subscribing Witnesses.

shifting mechanism being proportioned to cooperate with said bracket inany one of its HENRY WINTER different positions While maintaining con-Witnesses:

stant the operating relation of the belt shift- JOHN H. MGCREADY,

ing mechanism to the brake mechanism. JAMES Hommn.

Copies of this patent may be obtained for fixie cents each, byaddressing the O'ommissioner of Patents, Washington, D. G.

